NodeJS / ReactJS: Payment Integration with PayUMoney

We had to build a Web app in NodeJS/Express + React/Redux + MongoDB. In the app, we planned to integrate multiple payment options like PayTM, PayUMoney, and CCAvenue. While we had no issues with PayTM integration (Their docs were clear), We really had really tough time with PayUMoney integration. Their documents weren't very clear and hence I thought let me make my first Medium post on it. Hope it helps :-)

BOLT CHECKOUT:

PayUMoney has a feature called BOLT Checkout, wherein, the users don't have to be redirected…